This parameter specifies the time interval in seconds for which a Transaction Manager (TM), Resource Manager (RM) or Sync Point Manager (SPM) should retry the recovery of any outstanding indoubt transactions found in the TM, the RM, or the SPM. This parameter is applicable when you have transactions running in a distributed unit of work (DUOW) environment.
Recommendation: If, in your environment, indoubt transactions will not interfere with other transactions against your database, you may wish to increase the value of this parameter. If you are using a DB2 Connect gateway to access DRDA2 Application Servers, you should consider the effect indoubt transactions may have at the Application Servers even though there will be no interference with local data access. If there are no indoubt transactions, the performance impact will be minimal.